It seems pretty optional in the US at least. My phone has been broken for extended periods of time before. But different story trying to use budget European airlines like Wizz that require an app to get a boarding pass.

>"do a thorough review and restore all the mechanisms that made the use of smartphones and internet optional".

we should probably workshop ideas that are within reality.

downvoters are welcome to tell me how they would approach a worlwide review of everything that requires internet and un-internet it. i will wait.

some primer questions to get your brain turning: who organizes and conducts the review? who pays for the review? who pays for the implementations? whats the messaging and how do you convince people to go along with rethinking/re-implementing their entire already-working infrastructure that they have potentially spent millions to billions of dollars on? do you just dissolve all of the internet-only services, and tell the founders to suck it? who enforces it and how?